This article addresses the extreme control via sliding modes applied to identify the local optimum of the power produced by a photovoltaic system connected to the electrical grid. Extreme control via sliding modes is an optimizer widespread in the literature with different application proposals, where the sliding mode occurs from high-frequency switching. Ideally, this frequency should tend to infinity to avoid the effect of delay in the mode. slider. Particularly, applications involving MPPT converters have restrictions regarding the switching frequency, even with advances in silicon carbide-based semiconductor technology. Therefore, in this paper we explore the effect of sliding mode delay as a function of switching frequency limitation. To this end, we made adjustments to the control to include pulse width modulation. With the adjustments, the photovoltaic system converged to produce maximum power in two different conditions, according to the simulation results.
